LCM Riddle 1
The lowest common multiple of 10 and a positive integer is 60. What is the smallest possible value of
The answer is 12.
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1 0 = 5 × 2 , 6 0 = 5 × 2 × 2 × 3 .
This means that the other number should have 2 two as factors and also a 3 . 5 is optional. So the numbers that can be made are only 1 2 and 6 0 .
So our answer is 1 2